I
would have counterweighed
you
would have counterweighed
he / she / it
would have counterweighed
we
would have counterweighed
you
would have counterweighed
they
would have counterweighed
I
would have been counterweighing
you
would have been counterweighing
he / she / it
would have been counterweighing
we
would have been counterweighing
you
would have been counterweighing
they
would have been counterweighing